"He reportedly reads out a statement, in which he says: "My name is David Cawthorne Haines. I would like to declare that I hold you, David Cameron, entirely responsible for my execution.
"You entered voluntarily into a coalition with the United States against the Islamic State, just as you're predecessor, Tony Blair, did.
"Following a trend amongst our British Prime Ministers who can't find the courage to say no to the Americans. Unfortunately, it is we, the British public, that will in the end pay the price for our Parliaments selfish decisions."
http://www.telegraph.co.uk/news/worldnews/middleeast/syria/11094852/British-hostage-David-Haines-beheaded-by-Islamic-State-terrorists.html